From: Lokesh Vutla Date: Fri, 17 Jan 2020 06:27:30 +0000 (+0530) Subject: clk: sci-clk: add slack to clk-set-rate passed to firmware X-Git-Tag: v2020.04-rc1~13^2~1 X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=ea67b26e3fb063aa59584b113f3d7ea71a0db856;p=oweals%2Fu-boot.git clk: sci-clk: add slack to clk-set-rate passed to firmware Add slack to the clock frequency parameters passed to firmware within clk_set_rate. min-freq is changed to 0 and max-rate is changed to ULONG_MAX. This fixes certain issues with pll clock rounding when the firmware is not able to set the frequency exactly to the target, the current implementation fails if the available frequency is even 1Hz off the target. With the change, the firmware still tries its best to set the frequency as close as possible to the target. Reported-by: Vishal Mahaveer Signed-off-by: Lokesh Vutla Signed-off-by: Tero Kristo Signed-off-by: Lokesh Vutla --- diff --git a/drivers/clk/clk-ti-sci.c b/drivers/clk/clk-ti-sci.c index 478349f22f..ed1facbbcd 100644 --- a/drivers/clk/clk-ti-sci.c +++ b/drivers/clk/clk-ti-sci.c @@ -106,8 +106,7 @@ static ulong ti_sci_clk_set_rate(struct clk *clk, ulong rate) k3_avs_notify_freq(clk->id, clk->data, rate); #endif - /* Ask for exact frequency by using same value for min/target/max */ - ret = cops->set_freq(sci, clk->id, clk->data, rate, rate, rate); + ret = cops->set_freq(sci, clk->id, clk->data, 0, rate, ULONG_MAX); if (ret) dev_err(clk->dev, "%s: set_freq failed (%d)\n", __func__, ret);